Basically we have configured this element, to have an image background ( to a nice beach ), and we have set the height of this background element to 70%, which means that this background when it will be available in the view port, it will occupy 70% of the screen device's height.

Now put the cursor inside the Background element, and type a Welcome Message,

Update the font size to make it big

and hit the Save button.

And now you have a nicely designed background banner for your support site!

Remember: You need to publish your page ( using the Publish button as shown in the next image ), in order to let your site visitors see your designed pages, otherwise only site page editors will be able to see your changes.